1NL(1)                            User Commands                           NL(1)
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NAME

6       nl - number lines of files
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SYNOPSIS

9       nl [OPTION]... [FILE]...
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DESCRIPTION

12       Write each FILE to standard output, with line numbers added.
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14       With no FILE, or when FILE is -, read standard input.
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16       Mandatory  arguments  to  long  options are mandatory for short options
17       too.
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19       -b, --body-numbering=STYLE
20              use STYLE for numbering body lines
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22       -d, --section-delimiter=CC
23              use CC for logical page delimiters
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25       -f, --footer-numbering=STYLE
26              use STYLE for numbering footer lines
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28       -h, --header-numbering=STYLE
29              use STYLE for numbering header lines
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31       -i, --line-increment=NUMBER
32              line number increment at each line
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34       -l, --join-blank-lines=NUMBER
35              group of NUMBER empty lines counted as one
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37       -n, --number-format=FORMAT
38              insert line numbers according to FORMAT
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40       -p, --no-renumber
41              do not reset line numbers for each section
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43       -s, --number-separator=STRING
44              add STRING after (possible) line number
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46       -v, --starting-line-number=NUMBER
47              first line number for each section
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49       -w, --number-width=NUMBER
50              use NUMBER columns for line numbers
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52       --help display this help and exit
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54       --version
55              output version information and exit
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57       Default options are: -bt -d'\:' -fn -hn -i1 -l1 -n'rn' -s<TAB> -v1 -w6
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59       CC are two delimiter characters used to construct logical  page  delim‐
60       iters; a missing second character implies ':'.
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62       STYLE is one of:
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64       a      number all lines
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66       t      number only nonempty lines
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68       n      number no lines
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70       pBRE   number only lines that contain a match for the basic regular ex‐
71              pression, BRE
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73       FORMAT is one of:
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75       ln     left justified, no leading zeros
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77       rn     right justified, no leading zeros
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79       rz     right justified, leading zeros
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AUTHOR

82       Written by Scott Bartram and David MacKenzie.
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REPORTING BUGS

85       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
86       Report any translation bugs to <https://translationproject.org/team/>
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89       Copyright © 2020 Free Software Foundation, Inc.   License  GPLv3+:  GNU
90       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
91       This  is  free  software:  you  are free to change and redistribute it.
92       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

95       Full documentation <https://www.gnu.org/software/coreutils/nl>
96       or available locally via: info '(coreutils) nl invocation'
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100GNU coreutils 8.32                 July 2021                             NL(1)
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